prep.sh

#!/usr/bin/env bash

# prep.sh - Prepares an Ubuntu AMI for Rebundling
# For blogpost: 
# http://blog.crunch.io/user-managed-kernel-amis-from-existing-ubuntu
# Austin Godber <godber@crunch.io>

if [ `id -u` != '0' ]; then
  echo "ERROR: You must run this with 'sudo -E' or as the root user"
  exit 1
fi

# Adding the multiverse repo for the ec2-{api,ami}-tools
sed -i 's/universe/universe multiverse/' /etc/apt/sources.list
# Adding lucid partner repo to get sun jre
echo 'deb http://archive.canonical.com/ubuntu lucid partner' >> \
  /etc/apt/sources.list

apt-get update

apt-get install -y sun-java6-jre ec2-api-tools ec2-ami-tools
apt-get clean

mkdir /mnt/tmp

cat > /mnt/tmp/environment <<END
export AWS_USER_ID='<your-value>'
export AWS_ACCESS_KEY_ID='<your-value>'
export AWS_SECRET_ACCESS_KEY='<your-value>'
# /mnt/tmp/cert-...pem
export EC2_CERT=<path-to-cert-file>
# /mnt/tmp/pk-...pem
export EC2_PRIVATE_KEY=<path-to-pk-file>
END

chown -R ubuntu:ubuntu /mnt/tmp

ip=`wget -q -O - http://169.254.169.254/latest/meta-data/public-ipv4`

cat <<MSG


=================================================================

Now SCP your AWS Public Key and Cert to the /mnt/tmp/ directory:
  scp pk-*.pem cert-*.pem ubuntu@${ip}:/mnt/tmp/

Edit the generated environment template: /mnt/tmp/environment
  nano /mnt/tmp/environment

Substitute your AWS credentials.
=================================================================
MSG